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A study of the operation of selection for production in a New Zealand dairy herd : being a thesis submitted by "Bonus" for the Animal Husbandry section of the M. Agr. Sc. examination
No abstract. The following taken from the introduction:
"It may be argued that a datry farmer who is teeting hls
eow8 every year and breedlng hts own replacement helfers, slred
by pedtgree dalry bull-s wlth r.easonable bntterfat backtng,
shorrld by a prognamme of .tntelligent cuLltng, be able to
establtsh and malntain a herrl consistlng malnly of mature cows
of hlgh produclng abtllty. Thls ls the polnt that thts stucly
endeavours to answer."